Kasa needs an Away option to run from Sunset to Sunrise (or plus/minus minutes - setting to work like it does in Schedules). That way it can randomly come on and off from Sunset to Sunrise. It should...

Away Mode needs to run from Sunset to Sunrise, just like in Schedules, but with the random off and on of Away Mode. Also need to be able to set Away for all 7 days of week, not just one day at a time.